Patents Assigned to National Material Limited Partnership
  • Thermal break door frame assembly
    Patent number: 4930257
    Abstract: A thermal break door frame assembly includes a pair of frame members defining a groove. The groove includes a mouth opening in the area of the edge of a closed door. A unitary weatherstrip is adapted to engage the edge of the door and includes an integral thermal break tail projecting through the mouth into the groove between the frame members.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: June 5, 1990
    Assignee: National Material Limited Partnership
    Inventor: William P. Windgassen